[jnigen] Relax binding verification test (#3627)

.github/workflows/jnigen.yaml

diff --git a/.github/workflows/jnigen.yaml b/.github/workflows/jnigen.yaml
index 0cf982f..0de9d47 100644
--- a/.github/workflows/jnigen.yaml
+++ b/.github/workflows/jnigen.yaml
@@ -268,7 +268,9 @@
         working-directory: ./pkgs/jni_flutter
         run: |
           dart run tool/jnigen.dart
-          git diff --exit-code -- lib/src
+          git diff --exit-code \
+            --ignore-matching-lines='^// AUTO GENERATED BY JNIGEN .* DO NOT EDIT!$' \
+            -- lib/src
       - name: Enable KVM group perms
         run: |
           echo 'KERNEL=="kvm", GROUP="kvm", MODE="0666", OPTIONS+="static_node=kvm"' | sudo tee /etc/udev/rules.d/99-kvm4all.rules

pkgs/jnigen/test/test_util/test_util.dart

diff --git a/pkgs/jnigen/test/test_util/test_util.dart b/pkgs/jnigen/test/test_util/test_util.dart
index de198f1..22231f9 100644
--- a/pkgs/jnigen/test/test_util/test_util.dart
+++ b/pkgs/jnigen/test/test_util/test_util.dart
@@ -88,6 +88,7 @@
   final diffCommand = [
     'diff',
     '--no-index',
+    r'--ignore-matching-lines=^// AUTO GENERATED BY JNIGEN .* DO NOT EDIT!$',
     if (stderr.supportsAnsiEscapes) '--color=always',
   ];
   final diffProc = Process.runSync('git', [...diffCommand, path1, path2]);